MERCRUISER 87173A5 Cylinder Arms Rams Line Alpha

( Brand: Mercruiser ), ( Part Type: Line Cylinder Arm ), ( Manufacturer Part Number: 87173A5 )

Review MERCRUISER Trim Cylinder Arms Rams External Line Pre alpha One fits 1978-82

Introducing the Mercruiser 87173A5 Cylinder Arms Rams Line, a critical component for Marine engines manufactured between 1978 and 1982. These cylinder arms are essential for maintaining the proper functioning of your Mercruiser engine by providing the necessary hydraulic pressure to operate the engine's valves.

The Mercruiser 87173A5 Cylinder Arms are meticulously engineered using high-quality materials to ensure durability and reliability. The arms are designed with a robust, yet lightweight construction, making them suitable for the demanding marine environment. The rams are precision-machined to fit perfectly into your engine, ensuring a secure and snug installation.

The Mercruiser 87173A5 Cylinder Arms feature a pre-alpha design, which is specifically engineered to provide optimal performance and longevity. These arms utilize a hydraulic system to operate the engine's valves, and the rams are designed to minimize hydraulic leakage, ensuring consistent engine performance.

Each Cylinder Arm is equipped with a seal that helps prevent hydraulic fluid from escaping, maintaining the necessary pressure to operate the engine's valves. The seals are made from a high-quality, durable material that can withstand the harsh marine environment, providing long-lasting protection against leaks.

The Mercruiser 87173A5 Cylinder Arms Rams Line are easy to install, requiring minimal tools and expertise. The arms come with clear installation instructions, making the process straightforward for DIY enthusiasts. However, if you prefer, you can also have them installed by a professional technician to ensure a perfect fit and optimal performance.

In summary, the Mercruiser 87173A5 Cylinder Arms Rams Line is an essential upgrade for any Mercruiser Marine engine manufactured between 1978 and 1982. These arms are meticulously engineered using high-quality materials, ensuring durability and reliability. They are designed to minimize hydraulic leakage and provide optimal performance, making them an excellent investment for any boat owner seeking to maintain their engine's peak performance.

Mercruiser 87173A5 Cylinder Arms (Rams Line, Pre-Alpha, 1978-1982): A Comprehensive Analysis

Mercruiser 87173A5 cylinder arms are an essential component for older Mercruiser engines, specifically those from the Rams Line produced between 1978 and 1982. In this analysis, we will discuss the potential advantages and disadvantages of purchasing these cylinder arms.

1. Compatibility: These Mercruiser 87173A5 cylinder arms are designed specifically for the Rams Line engines from 1978 to 1982. Ensuring compatibility is crucial to maintaining the engine's performance and longevity.

2. Availability: Mercruiser genuine parts are widely available from various marine parts suppliers, both online and in physical stores. This ease of access makes it convenient for boat owners to replace worn-out or damaged cylinder arms.

3. Quality: Mercruiser is a reputable brand, and their genuine parts, including the 87173A5 cylinder arms, are known for their high quality. This assurance of superior craftsmanship can provide peace of mind and confidence in the product.

1. Cost: Mercruiser genuine parts, such as the 87173A5 cylinder arms, tend to be more expensive than aftermarket alternatives. This higher cost could be a disadvantage for budget-conscious boat owners.

2. Limited Lifetime: The cylinder arms, like any other mechanical component, have a limited lifespan. Regular replacement is necessary, which could add to the overall cost of ownership.

3. Longer Installation Time: Installing genuine Mercruiser parts, such as the 87173A5 cylinder arms, may take longer than aftermarket parts due to the need for specific tools, adherence to installation instructions, and the time required for proper alignment and torque application.

The Mercruiser 87173A5 cylinder arms offer several advantages, including compatibility, availability, and quality. However, they come with potential disadvantages such as cost, limited lifespan, and longer installation time. Ultimately, the decision to purchase these cylinder arms depends on the boat owner's priorities, budget, and time constraints. If compatibility and quality are the top priorities, then purchasing Mercruiser genuine parts is recommended. However, if cost and installation time are more significant concerns, then considering aftermarket alternatives might be a viable option.

Details:

These are used parts. Used parts may have cosmetic issues scratches, missing paint, faded plastic, pitting, rust, minor dents dings, etc. The condition of this item is as described in the and visible picture. These were basically only found on some of the 1978-1982 model's. MerCruiser 87173A5 Trim Cylinder Arms Rams External Line Pre-Alpha One 1978-82: Item Details Power Assembly x2.

For use with all Pre-Alpha One Units 1978-1982. The compatibility statements or suggestions in this listing is my best guess based on the quick research we did for item. The internal line trim cylinders 45706.

part #: 87173a5 prices

• $40.00-$325.00

specifications vesselveep:

• for years: 1978-82
• brand: Mercruiser
• part type: Line Cylinder Arm
• manufacturer part number: 87173A5

offer vesselveep:

• availability: In Stock
• started: June 19, 2025
• options: Ship-to-home
• sold: 0
• quantity: 1

payments vesselveep:

• wallet: Paypal
• other
• credit card: Discover

general vesselveep:

• Parts Accessories > Boat Parts > Other
• condition: Used

shipping vesselveep:

• service: USPS Ground Advantage, USPS Priority Mail
• transit: 5-8 Days
• type: Fixed
• carrier: USPS
• class: Standard, Expedited
• cost: $17.80

seller vesselveep:

• rating: 100.0%
• city: Byron Center, Michigan
• # reviews: 5260

returns vesselveep:

• paid by: Buyer
• time: 30 Days
• policy: Returns Accepted

Mercruiser 87173A5 Is Similar To:

• Mercury Marine mercruiser 822344t14 Marine mercruiser New Oem Trim Assy (30.9% similar) Brand new, genuine mercury marine/mercruiser trim assay. This is a factory original equipment item, not aftermarket...(June 3rd, 2024)
• Mercruiser 7028188 Carburetor 6 Cylinder Inline (48% similar) Came off running motor should be cleaned up before installing been sitting awhile...(June 3rd, 2024)
• Mercury 822157t 2 Mercruiser Quicksilver Trim Tab Oem Part 822157 (33.1% similar) New old open stock. Mercury Mercruiser quicksilver trim tab oem part # 822157T see all photos...(June 3rd, 2024)
• Heurofosh 91-78310 Gen Ii Bravo I Iii Hinge Pin Tool 18-9861 For Mercruiser Alpha One (24.5% similar) Tool comes with black oxide coating for years of use. This tool is used on the hinge pin bolt and separates housing from gimbals ring. This tool is designed to remove and install hinge pins for Mercruiser drive units. East marine parts is a outboard inboard marine parts oem manufacturer with...(June 7th, 2024)
• Mercruiser 44-66060-3 Propeller Prop Shaft Gen Ii One Lower Unit Gearcase 91-97 (33.1% similar) Same as sierra 18-2166 or glam 11150. Mercruiser 44-66060-3 propeller prop shaft gen ii one lower unit gear case 91-97 91-97: item details Mercruiser found in early drives 1991 -1997 s/n 0D469859 thru 0K999999 also I model's 1970 -1990. Used parts may have cosmetic issues scratches, missing paint...(June 13th, 2024)
• Mercruiser 56046a1 120hp 2.5 140hp 3.0l 165hp Trim Sender Indicator 48170a4 888 (36.9% similar) Trim sender indicator...(June 16th, 2024)
• Mercury Mercruiser 8m0083466 Genuine Harness Trim Pwm 2018 (33.8% similar) This genuine mercury Mercruiser harness trim wpm 8M0083466 is a must-have for any boat owner who wants to ensure their boats engine running smoothly. The item measures 7 inches in length , height , and width is manufactured the USA. It is perfect for those who want to replace their old...(June 19th, 2024)
• Mercruiser 61000004p Alpha 1 Gen 2 Transom Assembly Used With Cylinders Nice Fresh Water (38.1% similar) Comes with all in the pics. In good used shape. Used alpha 1 gen 2 transom assembly...(June 20th, 2024)
• Mercury 1547-815930a14 Mercruiser Alpha 1 Gen Ii Upper Unit Gear Case 4.3 V6 17 19 1.84r (26.5% similar) The mercury part numbers are 1547-815930A14, 1547-815930A4 and 861063A they are all mercury gears, not after-market. The u-joints are not worn or rusted and have no play. This upper unit is in great condition. The splines on the driveshaft are in perfect condition. Mpn: 815930A14...(June 25th, 2024)
• Mercruiser 1547-3365 1970-82 Pre-alpha Stern Drive Upper Unit Gearcase Gear Ratio 1.65 (37.8% similar) Part #: Mercruiser 1547-3365 for sale...(June 28th, 2024)
• Mercruiser 90-821071920 W5 Operation And Maintenance Manual Alpha One V6 Models (47.1% similar) Part #: Mercruiser 90-821071920 for sale...(July 23rd, 2024)